High-Temperature Oxidation of Bismuth- and Antimony-Based Sulfosalts

Fiseha Tesfaye; Dmitry Sukhomlinov; Daniel Lindberg; Mykola Moroz; Pekka Taskinen; Leena Hupa

doi:10.1080/08827508.2018.1481061

High-Temperature Oxidation of Bismuth- and Antimony-Based Sulfosalts

Fiseha Tesfaye^*
, Dmitry Sukhomlinov
, Daniel Lindberg
, Mykola Moroz
, Pekka Taskinen
, Leena Hupa

^*Corresponding author for this work

Åbo Akademi University
Seoul National University

Research output: Contribution to journal › Article › Scientific › peer-review

4 Citations (Web of Science)

Abstract

In this article, oxidation processes of Ag-Bi-Sb-based phases were investigated. Synthesized AgBiS ₂ and AgSbS ₂ -Sb ₂ S ₃ -Sb samples were thermally analyzed in synthetic air by applying the simultaneous DSC-TGA analysis technique. The oxidation processes at P _O₂ =0.2 atm and T<1173 K were observed to take place in many-step sequence of various reactions with an overall reaction 2AgMeS ₂ + 5.5O ₂ (g) ⇄ 2Ag + Me ₂ O ₃ + 4SO ₂ (g), where Me=(Bi,Sb). Oxidations of AgBiS ₂ , Sb ₂ S ₃ , and AgSbS ₂ were observed to begin above 549±2K, 610±2K, and 733±2K, respectively. Furthermore, oxidation processes of AgBi ₃ S ₅ and Ag ₃ SbS ₃ were estimated, and thermodynamic functions for the overall oxidation reactions were calculated and discussed.

Original language	English
Pages (from-to)	67-78
Number of pages	12
Journal	Mineral Processing and Extractive Metallurgy Review
Volume	40
Issue number	1
DOIs	https://doi.org/10.1080/08827508.2018.1481061
Publication status	Published - 2 Jan 2019
MoE publication type	A1 Journal article-refereed

Funding

The authors are grateful to the Academy of Finland and the Johan Gadolin Scholarship Programme for financial support. This work was made under project “Thermodynamic investigation of complex inorganic material systems for improved renewable energy and metals production processes” as part of the activities of the Johan Gadolin Process Chemistry Centre at Åbo Akademi University. Part of this work was made as a sub task of Improved Sulfide Smelting (ISS) project of Fimecc Oy, supported also by Boliden Harjavalta, Boliden Kokkola Oy, Norilsk Nickel Finland Oy and Outotec (Finland) Oy.

Keywords

DSC-TGA analysis
Gibbs energy
Pyrometallurgical roasting
Thermal oxidation
AG-SB-S
SB2S3 OXIDATION
BINARY-SYSTEM
AGBI3S5
PHASE-EQUILIBRIA
SULFIDE
DISTRICT
KINETICS
X-RAY
DIFFRACTION

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10.1080/08827508.2018.1481061

https://research.abo.fi/converis/portal/Publication/14233720

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@article{06ce178e8d254951a7afa046cb22d083,

title = "High-Temperature Oxidation of Bismuth- and Antimony-Based Sulfosalts",

abstract = " In this article, oxidation processes of Ag-Bi-Sb-based phases were investigated. Synthesized AgBiS 2 and AgSbS 2 -Sb 2 S 3 -Sb samples were thermally analyzed in synthetic air by applying the simultaneous DSC-TGA analysis technique. The oxidation processes at P O₂ =0.2 atm and T<1173 K were observed to take place in many-step sequence of various reactions with an overall reaction 2AgMeS 2 + 5.5O 2 (g) ⇄ 2Ag + Me 2 O 3 + 4SO 2 (g), where Me=(Bi,Sb). Oxidations of AgBiS 2 , Sb 2 S 3 , and AgSbS 2 were observed to begin above 549±2K, 610±2K, and 733±2K, respectively. Furthermore, oxidation processes of AgBi 3 S 5 and Ag 3 SbS 3 were estimated, and thermodynamic functions for the overall oxidation reactions were calculated and discussed. ",

keywords = "DSC-TGA analysis, Gibbs energy, Pyrometallurgical roasting, Thermal oxidation, AG-SB-S, SB2S3 OXIDATION, BINARY-SYSTEM, AGBI3S5, PHASE-EQUILIBRIA, SULFIDE, DISTRICT, KINETICS, X-RAY, DIFFRACTION",

author = "Fiseha Tesfaye and Dmitry Sukhomlinov and Daniel Lindberg and Mykola Moroz and Pekka Taskinen and Leena Hupa",

year = "2019",

month = jan,

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doi = "10.1080/08827508.2018.1481061",

language = "English",

volume = "40",

pages = "67--78",

journal = "Mineral Processing and Extractive Metallurgy Review",

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T1 - High-Temperature Oxidation of Bismuth- and Antimony-Based Sulfosalts

AU - Tesfaye, Fiseha

AU - Sukhomlinov, Dmitry

AU - Lindberg, Daniel

AU - Moroz, Mykola

AU - Taskinen, Pekka

AU - Hupa, Leena

PY - 2019/1/2

Y1 - 2019/1/2

N2 - In this article, oxidation processes of Ag-Bi-Sb-based phases were investigated. Synthesized AgBiS 2 and AgSbS 2 -Sb 2 S 3 -Sb samples were thermally analyzed in synthetic air by applying the simultaneous DSC-TGA analysis technique. The oxidation processes at P O₂ =0.2 atm and T<1173 K were observed to take place in many-step sequence of various reactions with an overall reaction 2AgMeS 2 + 5.5O 2 (g) ⇄ 2Ag + Me 2 O 3 + 4SO 2 (g), where Me=(Bi,Sb). Oxidations of AgBiS 2 , Sb 2 S 3 , and AgSbS 2 were observed to begin above 549±2K, 610±2K, and 733±2K, respectively. Furthermore, oxidation processes of AgBi 3 S 5 and Ag 3 SbS 3 were estimated, and thermodynamic functions for the overall oxidation reactions were calculated and discussed.

AB - In this article, oxidation processes of Ag-Bi-Sb-based phases were investigated. Synthesized AgBiS 2 and AgSbS 2 -Sb 2 S 3 -Sb samples were thermally analyzed in synthetic air by applying the simultaneous DSC-TGA analysis technique. The oxidation processes at P O₂ =0.2 atm and T<1173 K were observed to take place in many-step sequence of various reactions with an overall reaction 2AgMeS 2 + 5.5O 2 (g) ⇄ 2Ag + Me 2 O 3 + 4SO 2 (g), where Me=(Bi,Sb). Oxidations of AgBiS 2 , Sb 2 S 3 , and AgSbS 2 were observed to begin above 549±2K, 610±2K, and 733±2K, respectively. Furthermore, oxidation processes of AgBi 3 S 5 and Ag 3 SbS 3 were estimated, and thermodynamic functions for the overall oxidation reactions were calculated and discussed.

KW - DSC-TGA analysis

KW - Gibbs energy

KW - Pyrometallurgical roasting

KW - Thermal oxidation

KW - AG-SB-S

KW - SB2S3 OXIDATION

KW - BINARY-SYSTEM

KW - AGBI3S5

KW - PHASE-EQUILIBRIA

KW - SULFIDE

KW - DISTRICT

KW - KINETICS

KW - X-RAY

KW - DIFFRACTION

UR - https://www.scopus.com/pages/publications/85048481024

U2 - 10.1080/08827508.2018.1481061

DO - 10.1080/08827508.2018.1481061

M3 - Article

AN - SCOPUS:85048481024

SN - 0882-7508

VL - 40

SP - 67

EP - 78

JO - Mineral Processing and Extractive Metallurgy Review

JF - Mineral Processing and Extractive Metallurgy Review

IS - 1

ER -

High-Temperature Oxidation of Bismuth- and Antimony-Based Sulfosalts

Abstract

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